Apparatus for the control of valves.



' in. 874,812. I PATENTED 1330443907.

3 M. WEISS. v APPARATUS FORTHE CONTROL OE VALVES.

APPLIUATION FILED ll 6, 1907.

' Fig.1

Inventor.-

Wiinesses sr ATES PATENT OFFICE.

1:" MATTHIAS WEISS, OF MARIAFELD, NEAR LAIBACH, AUSTRIAJIUNGARY, ASSIGNOR OF ONE- HALF TO STANISLAUS-JUNGWIRTH, OF ST. STEFAN, STYRIA, AUSTRIA-HUNGARY.

APPARATUS FOR THE CONTROL OF VALVES.

To all whom it mag concern: Be it known that I, MATTHIAs 'nlss, sub- 'jectof the Emperor of Austria-Hungary,

residing at Mari'afeld, near Laibach, in Carniola, Austria-Hungary, have invented certain new and useful Improvements in Apparatus for the Control of Valves by Steam- Pressure, of which the following is a specifi- Ifcation, Y The invention relates to a control of valves ,by steam wherein each valve is connected a piston sliding in a cylinder, one surface'of this iston being always under steam pressure, w 'le the opposite surface can be either under steam ressure or under atmospheric pressure by t e adjustment of a valve. The invention consists in the hereinafter .described special construction of the control ap aratus, which is applicable to all kinds of va ves which are controlled by steam pressure, therefore to iston and disk valves.

In the drawing, igure 1 shows in vertical cross section one form of construction of the control together with the steam cylinder, and Fig. 2 shows a modification of the valve of the control regulator.

The admission valve 1 (Fig. 1) is connected I by a rod 3 with the piston 4 which slides in a cylinder 5. Inside the cylinder 5 is a second cylinder 6 in which a valve 7 works; in the side of this valve is a groove running in an axial direction. If now by turning the valve this groove is brought into register with the steam ipe 8 the steam flows along the groove into the space 9 above the piston 4 and resses on the upper surface 10 thereof. As tfie under surface 11 of this piston is smaller than the said upper surface 10 by the cross section of the spindle and the steam pressure is the same per unit of area, both above and below the piston, the latter is moved downward so that the valve 1 connected with it is shut by this movement raided by its own weight. 'hen the valve is turned to bring its groove into register with the exhaust 12, the steam in chamber 9 esca es and the pressure on surface 11 raises va vc 1. For limiting the rise of the valve, adjustable projections 13 are provided.

Atthe exhaust valve 2 the arrangement is the same as at the valve 1. Thepiston surface 11 nearer the valve 2 is always under pressure of the steam issuing through valve 2, while by adjusting the valve 7 the surface 10 in the chamber 14 farther from the valve,

Specification of Letters Patent.

Application filed May 6. 1907; Serial No. 372.249

Patented Dec: 24, 1907..

is placed either under full steam pressure through the steam pipe 8 connected 'by-a pipe with the upper steam chamber 15 or under atmospheric pressure by connecting it with the exhaust 12. In the first case the valve is raised while in the second case it is shut owing to the escape of the steam and its own weight. I

The valve 7 is under the control'of a coiled spring 16 the inner end of which is connected.

with the spindle of said valve and the outer 'end rigidly connected with a stationary part 17. The normal tendency of the spring is to hold the valve in position to bring the groove into communication with the steam pipe 8 thus permitting the steam to pass along said groove into the space 9 and onto the surface 10 of the piston, thus closing the admission or exhaust valve. The valve 7 may be r0-, tated to bring the groove into communication with the exhaust port 12 by any preferred means. The means here illustrated consists of an armature e mounted on the valve stem and which is attracted by the electromagnets e, the circuit of which latter is made and broken by a switch, not shown, mounted on the engine shaft. It will be understood that when the circuit is broken the spring having been ut under tension by the rotation of the spinc le, returns'the valve 7 to its normal positlon. The valve can be made to slide instead of to turn. In this casethe valve 7*, is bell-shaped as shown in Fig.2, and has a slot on its lower edge opposite the exhaust channel 12 and an opening in, its wall which can register with the steam pipe 8 so'that in the raisedposition of the valve the space above the piston 4 is in communication with the exhaust channel and in the lowered position the communication is with the steam pipe.

I I claim 1. In a valve controlling mechanism, a valve, a piston connected thereto having faces of different area, a cylinder containing the piston open on one sideof the piston and having an admission port and exhaust port on the other side of the piston, and a rotatable valve mounted in the cylinder adapted to alternately establish communication between the admission ports and exhaust port.

2. In a valve controlling mechanism, a valve, a piston connected thereto having faces of different area, a cylinder containing the piston open on one side of the piston and having, anadmission port and an exhaust port on the other side of the piston, and a rotatable valve having agroove in its side parallel to its axis adapted to alternately establish communication between said admission port and cylinder and between the cylport and fan admission port, a piston mount-- ed in the cylinder having faces of different area the face of smallest area directed towards the open end, a valve cylinder mounted in the piston cylinder having ports com municating with the aforesaid ports, a valve connected to the piston, and a valve in the valve cylinder adapted to alternately open and close the exhaust and admission ports. 4. In a valve controlling mechanism, acylinder open at one end having an exhaust port and an admission port, a piston mounted in the cylinder having faces of different area the face of smallest area directed towards the open end, a valve cylinder in the piston cylinder having ports communicating v tinder and between the piston cy tably mounted in the valve cylinder, having a peripheral groove parallel to its axis adapted to alternately establish communication between the admission port and piston cylinder and exhaust port. I

5. In a valve control, a valve; a cylinder having an admission portand a exhaust port, a piston in the cylinder connected to the valve and having one face subjected to the pressure of steam in the cylinder, and a valve co-axial with the piston controlling the admission port and exhaust portwhereby the opposite face of the piston can be subjected either to full steam pressure or to atmospheric pressure.

Intestimony whereof I havehereunto set my hand in presence of two subscribing wite nesses.

MATTHIAS WEISS. \Yitnesses Jos. REIBRECK, Roar. Hmxoanrxnn. 

